Preliminary applications of a land surface temperature retrieval method to IASI and AIRS data
文献类型：SCI/SSCI论文
| 作者 | Ouyang X. Y. ; Kang G. T. ; Zeng F. N. ; Qi E. Y. ; Li Z. L. |
| 发表日期 | 2013 |
| 关键词 | tropospheric water-vapor emissivity satellite radiosonde separation algorithm images |
| 英文摘要 | Land surface temperature (LST) is one of the key state variables for many applications. This article aims to apply our previously developed LST retrieval method to infrared atmospheric sounding interferometer (IASI) and atmospheric infrared sounder (AIRS) data. On the basis of the opposite characteristics of the atmospheric spectral absorption and surface spectral emissivity, a downwelling radiance residual index' (DRRI) has been recalled and improved to obtain LST and emissivity. To construct an efficient DRRI, an automatic channel selection procedure has been proposed, and 11 groups of channels have been selected within the range 8001000 cm(1). The DRRI has been tested with IASI and AIRS data. For the IASI data, the radiosonde data have been used to correct for atmospheric effects and to retrieve LST, while the atmospheric profiles retrieved from AIRS data have been used to perform the atmospheric corrections and subsequently to estimate LST from AIRS data. The differences between IASI- and Moderate Resolution Imaging Spectroradiometer (MODIS)-derived LSTs are no more than 2 K, while the differences between AIRS- and MODIS-derived LSTs are less than 5 K. Even though an exceptionally problematic value occurred (12.89 K), the overall differences between AIRS-estimated LST and the AIRS L2 LST product are no more than 5 K. Although the IASI-derived LST is more accurate than the AIRS-derived one, the convenient retrieval of AIRS atmospheric profile made this method more applicable. Limitations and uncertainties in retrieving LST using the DRRI method are also discussed. |
| 出处 | International Journal of Remote Sensing |
| 卷 | 34 |
| 期 | 9-10 |
| 页 | 3128-3139 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0143-1161 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30326]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Ouyang X. Y.,Kang G. T.,Zeng F. N.,et al. Preliminary applications of a land surface temperature retrieval method to IASI and AIRS data. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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